572 Scientific Proceedings, Royal Dublin Society. 



KILDARE. 



In this county there are not any sandstones that are now used 

 for cut-stone purposes, while the places in which sandstones occur 

 are of very limited extent. 



Stones required for dressed or cut purposes are ohtained from 

 the limestone quarries at some distances, or from the granite 

 range in Wicklow or Carlo w. 



In the Ordovicians to the east margin of the county, and in 

 the small protrudes at the Chair of Kildare and Red Hill, there 

 are some subordinate grits and sandstones ; while there are Car- 

 boniferous conglomerates and sandstones margining them in 

 places, and coming in from the Co. Dublin, at the Hill of Lyons* 

 to the southward of Celbridge. At Newtown, some miles west 

 of Maynooth, in an outlying patch of Coal-measures, there are 

 also some subordinate beds of grit. 



Carboniferous. — Bed Hill, a quarry at the northern end. — Eed 

 conglomerate ; formerly quarried for millstones. 



Hill of Allen. — Grits ; formerly extensively quarried for mill- 

 stones. 



Ballindolan. North of Edenderry. — Blackish flags ; argillaceous 

 and slightly calcareous ; used in Edenderry, King's County. 



Sand and Gravel. — These are common everywhere in the low 

 country ; but some of the sands require to be washed before being 

 used for building. In places there is a sand with a latent calca- 

 reous cement : this, when opened in the pits, stands with a perpen- 

 dicular wall, which does not weather or slip. This sand is valuable 

 as a manure, and formerly was extensively used. 



KILKENNY. 



To the south-west, coming in from the Co. Tipperary, and to 

 the south-east, coming in from the Counties Wexford and Water- 

 ford, are limited tracts of Ordovicians (?), in the latter partly altered 

 and associated with granite intrusions; while margining these 

 areas are Carboniferous Sandstones. To the north of the county are 

 Coal-measures, part of Slieve-Margy, but now more generally 

 known as the Castlecomer Coal-field. 



